Health Service Coordinator Sue Patchen said these tests are typically done only when a patient shows symptoms or appears to be at risk, according to requirements dictated by insurance companies.

Life Line Screening sees the service as cost-effective and potentially life-saving.

“Prevention is a lot better than fixing something after it occurs,” said Patchen.

Dr. Scott Shurmur, director of Preventative and Rehabilitative Cardiology at the University of Nebraska Medical Center, considers the tests to be a "gray area."

“If you're under a doctor's care, you take the medication they tell you, you eat well, you live a healthy lifestyle and have no symptoms, the chances of missing something lethal are minimal, even without scanning,” he said.

Shurmur said abdominal aortic screening is recommended for most men older than 65 years old, people with a family history and for some women older than 65, particularly if they have smoked. But, the other tests are often done as part of routine physicals.

There is also concern that if the tests come back clear, patients may not think they need to continue to take care of their health.

"The absence of blocked arteries at this point doesn't mean that you don't need to adhere to the other strategies,” said Shurmur.

According to experts, most strokes are preventable. They said it is important to get checked if you are older than 65 years old, have a family history of stroke or have smoked.

Forty years ago, one of the greatest boxing matches in history took place in an unlikely setting: the capital of the Philippines. Muhammad Ali's epic win over great rival Joe Frazier in 1975 became known as the "Thrilla in Manila."

Hillary Clinton did not have a State Department email account while she served as America's top diplomat, a senior state department official said Monday, and instead used a personal email account during her four years on the job.